scholarly journals An Overview of Confirmatory Factor Analysis and Item Response Analysis Applied to Instruments to Evaluate Primary Healthcare

2011 ◽  
Vol 7 (SP) ◽  
pp. 79-92 ◽  
Author(s):  
Darcy Santor ◽  
Jeannie Haggerty ◽  
Jean-Frédéric Lévesque ◽  
Frederick Burge ◽  
Marie-Dominique Beaulieu ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Item Response ◽  
Primary Healthcare ◽  
Response Analysis ◽  
Confirmatory Factor

The Structure of Violent Behavior

2006 ◽  
Vol 33 (6) ◽  
pp. 706-737 ◽  
Author(s):  
Christine Michie ◽  
David J. Cooke
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Item Response ◽  
Community Violence ◽  
Lower Order ◽  
Violent Behavior ◽  
Confirmatory Factor ◽  
Violent Acts ◽  
Weapon Use ◽  
Best Fit

Common difficulties in measures of violent behavior are their multidimensional nature, the nonempirical ordering of violent acts, the inclusion of undiscriminating items, and differential precision of measurement across the range of seriousness. Data collected on a sample of 250 male Scottish prisoners, using the MacArthur Community Violence Screening Instrument, are examined using confirmatory factor analysis and item response theory (IRT) analysis. A hierarchical model with a coherent superordinate factor overarching two lower order factors—violence based on weapon use and violence without weapon use—provide the best fit to the data. The ordering of the items on the scale does not conform to the order indicated by IRT analysis. Items vary considerably in the amount of information they provide, with the precision of measurement of the total scale being poor at high levels of the scale. Ways of improving the measurement of violence are discussed.

scholarly journals Psychometric Properties and Structures of the IAT, GPIUS and GAS Scales: A Bifactor Approach

2019 ◽  
Vol 13 ◽  
Author(s):  
Lingling Xu ◽  
Yan Cai ◽  
Dongbo Tu
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Psychometric Properties ◽  
Item Response ◽  
Internet Addiction ◽  
Self Report ◽  
Item Response Model ◽  
Multidimensional Item Response ◽  
Test Information ◽  
Confirmatory Factor

AbstractThis study applied a bifactor approach to investigate the structures and simultaneously compare the psychometric properties of three popular self-report internet addiction (IA) instruments. A bifactor confirmatory factor analysis was used to address the structures of the three scales, while the bifactor multidimensional item response model was employed to compare the psychometric properties of the three scales. Results of bifactor confirmatory factor analysis (CFA) showed that the bifactor structures were suitable for the three scales. These corresponding bifactor structures were used in the subsequent bifactor multidimensional item response theory (MIRT) analysis. Results of the bifactor MIRT showed that: three instruments of IA performed well as a whole; the Generalised Problematic Internet Use Scale (GPIUS) and Internet Addiction Test (IAT) provided more test information and had less standard error of measurement, which ranged from −3 to −1 standard deviations of theta or IA severity; the Game Addiction Scale (GAS) performed better than the other two scales in that it can provide more test information in the large area of IA severity (from −1 to +3 SDs). These suggest that the GPIUS and IAT may be the best choice for epidemiological IA studies and for measuring those with lower IA severity. Meanwhile, the GAS may be a good choice when we recruit those with various levels of IA severity.

scholarly journals Evidence of Validity of a Modern Homonegativity Measure against Gays and Lesbians

Psico-USF ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 673-684 ◽  
Author(s):  
Kaline da Silva Lima ◽  
Juliana Maria Vieira Tenório ◽  
Francisco Romário ◽  
Luã Medeiros Fernandes de Melo ◽  
Josemberg Moura de Andrade
Keyword(s):  
Factor Analysis ◽  
Item Response Theory ◽  
Confirmatory Factor Analysis ◽  
Item Response ◽  
The Other ◽  
Validity Evidence ◽  
Proposed Model ◽  
Confirmatory Factor ◽  
Parallel Forms ◽  
High Degree

Abstract The goal of this research was to adapt and obtain validity evidence of the Modern Homonegativity Scale (MHS), which is set by two parallel forms with 12 items, one of them referring to gays (MHS-G) and the other referring to lesbians (MHS-L). In the first study 418 heterosexuals between 18 and 58 years old (M = 24,9; SD = 7,23), mostly women (66,3%) living at João Pessoa-PB (50,5%) answered. Both scales have shown as unidimensional and containing a high degree of internal consistency. The second study had the participation of 273 heterosexuals between 18 and 55 years old (M = 23,7; SD = 6,33), mostly women (69%). The confirmatory factor analysis showed satisfactory adjustment indexes for the proposed model and the Item Response Theory (IRT) demonstrated a good degree of discrimination and variation of the difficulty parameters. Therefore, we may conclude MHS is psychometrically valid, easily applicable and can be used in research contexts.

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